.bd-search {
    position: relative;
    padding: 1rem 15px;
    margin-right: -15px;
    margin-left: -15px;
    border-bottom: 1px solid rgba(0,0,0,.05);
}

.bd-sidebar {
    position: -webkit-sticky;
    position: sticky;
    top: 4rem;
    z-index: 1000;
    /*height: calc(100vh - 4rem);*/
    border-right: 1px solid rgba(0,0,0,.1);
}